1. Instruments of cataract surgery 1) Barraquer wire speculum Characteristics-It is universal speculum as can be used for both eyes.It is used to separate eye lids for intraocular surgery.Self retaining.Light weight USES-Intraocular surgery-cataract & glaucoma surgery.Extraocular surgery- squint & pterygium surgery.

2. Enucleation & evisceration surgeryRemoval of conjunctival and corneal foreign body. Cauterisation of corneal ulcer. 3. 2)Superior rectus holding forceps Characteristics-It is a forcep with a double curve at the end(S shaped)It has a single big tooth to hold the superior rectus muscle It has it first angle at a distance of 7.7 mmUses-Used to hold the superior rectus muscle for passing bridle suture to rotate the eyeball downward in cataract and glaucoma surgery.To fix the eyeball during surgery. 4. Conjunctivalspring scissor Characteristics- It may be straight or curved with sharp or blunt tip. It is a sleek longer scissor. The blade is kept apart by spring action. USES- Used to cut conjunctiva to make conjunctival flap. 5. Globe Fixation Forcep Characteristics- It has 2-3 or 3-4 teeth at its tip. It is used to hold the conjunctival tissue and episcleral tissue together. USES- To hold the conjunctiva for making conjunctival flap with use of conjunctival scissor. To fix the globe while making tunnel with crescent. 6. Electrocautery along with connection wire Characteristics- It is also called wet field cautery as it is used in moist field. It is also called as bipolar dithermy as it has two poles and to the other side wire is attached. USES- It is used to cautery the bleeding episcleral vessels & conjunctival vessels after the conjunctival flap is made. 7. Bard parker knife handle with blade Characteristics- It is a handle in which 15 number disposable blade is loaded if cataract surgery is done. It has a long handle with groove at its extreme end in which blade is loaded. USES- To make corneo-scleral gutter in cataract surgery. Used in DCR, ptosis , entropion , ectropion surgeries for incision of skin. 8. Crescent Knife Characteristics- It is blunt tipped which has a cut splittinf action at the tip and both the sides. The blade is curved and is mounted on plastic handle. USES- It is used to make self sealing sclero corneal tunnel after making the scleral gutter in cataract surgery. 9. Keratome Characteristics- It has a thin diamond shape blade with a sharp apex and two cutting edge. This is a curved disposable keratome . Straight disposable keratome are also available. USES- It is used for making entry in anterior chamber after the tunnel is formed. 10. Cystitome Characteristics- It has a tiny , sharp and triangular flag shaped tip . It can be made by bending the tip of 26 gauge needle. USES- For incising the anterior capsule of the lens by using envelope method ,ccc method, can opner method. 11. Kelman-McPherson forceps Characteristics- These are fine forceps with bent blade. USES- Used to tear off the anterior capsule of lens in cataract surgery. Used to hold the IOL . Used to hold the sutures. 12. Lens expressor Characteristics- It has a flat corrugated metal handle with curved limb ending in a knob which is at 90 degree USES- It is applied at 6o clock position to deliver the nucleus out. 13. Irrigation wire vectis Characteristics- It is a modified vectis in whick loop is made of hollow wire . It has three 0.3 mm opening . Posterior end of loop is continuous with hollow handle to which infusion set is attached. USES- It is used to deliver nucleus by introducing this vectis from tunnel and applying counter pressure at 12 o clock position. 14. Simcoes two way irrigation and aspiration canulla Characteristics- It has at one end straight or angular blunt canulla . The other end has canull which is fixed with the syringe. Uses- For irrigation and suction of lens particles or cortical matter from anterior chamber after nuclear delivery. Can also be used for aspiration of hyphaema. 15. Lens holding forcep Characteristics- It is a spring action forcep. Ithave has blunt curved blades. They dont have tooth. USES- It is used to hold the non foldable PMMA IOL during implantation . 16. Sinskey hook or IOL dialer Characteristics- It is a pencil like handle with thin neck . The neck is bent in between at 45 degree . The tip is bent at 90 degree. USES- The tip is engaged in the hole present in optics of PC-IOL and is used to rotate it . 17. Ring capsule polisher Characteristics- It has a long handle with bent neck at the tip there is a ring. USES- It is used to polish or seperate the adherent cortical matter with the posterior capsule of lens before IOL implantation. 18. Instruments used in DCR surgery Primary and secondary trephine- Primary trephine has a pointed tip in the middle and it is used to mark the frontalprocess of maxilla and lacrimal bone . Secondary treplhine is used to make the opening in DCR surgery. 19. Citellis bone punch It is used in DCR surgery during osteotomy in increasing the opening. Disadvantage- Accidental damage to mucous membrane of nose and nasal septum can occur. 20. Chisel Characteristics- It is a thick stout flat spoon like chisel with sharp end . USE- It is used to break small bones in DCR surgery during osteotomy. 21. Punctum dilator Characteristics- It has a corrugated metal handle with a conical point. USES- It is used to dilate the punctum before probe is introduced in lacrimal sac. 22. Lacrimal probe Characteristics- These are set of straight metal wires with blunt end and flat platform at the centre. It is of varying thickness from 0-8 USE- It is introduced from the puncta and guides in making h shaped incision of lacrimal sac. 23. I copied from Dr.rajatsaxenas(JR2) pendrive. Njy all d best 4 xams Abhinavkumar 07-08 elmch